Missing Custom Classes

Description: I can't select any of my custom classes in Multiplayer. Not in a Private Match and not on a server. They are just not showing up under the default classes.
I have a fresh install of MW3 and Plutonium and some of the classes are edited so it's not the issues they are default custom classes.

Screenshots:

Edit #1: Sry for the huge screenshots, I don't know how to resize them with the text editor.

Edit #2: I don't know why but installing all DLCs that were released for MW3 fixed the issue.